Pattern-lathe



F. NUESKE.

PATTERN LATHE.v APPLICIATVION FILED SEPT. T9. |919.

Pawnaspt. 28,1920.

2 SHEETS-SHEET 2.

IL Mills. u

UNITED STATEiPATENT OFFICE.

FREDERICK NU'SKE, GF NEW YORK, N'. Y., ASSIGNOB. TO JULIUS NUESKE & SONS7 INC., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

PATTERN-LATHE.

Specification of Letters Patent.

Application filed September 19, 1919. Serial No. 324,735.

To all 107mm t may concern.'

Be it known that I, FREDERICK NUEsKn, a citizen of-the .United Statew, and a resident of the city of New York, borough of Queens, in the county of Queens and State of New York, have invented a new andv `Improved Pattern-Lathe, of which the following is a full, clear, and exact description.

This invention relates to improvements in pattern lathes, an object of the invention being to provide improved means for reciprocating a pattern and the work heldin engagement respectively with a xed pattern disk and a rotary cutter so that the work will be shaped by the cutter in accordance with the pattern.

A further object is to provide improved means for mounting the work and the pattern, improved means for reciprocating the work and the pattern and imparting rotary motion to both, and provide improved means for spring pressing a pattern against a fixed pattern disk and the work against a rotary cutter during their reciprocating movement.

A further object is to provide improved means for transmitting motion to the pattern, the work, and the rotary cutter, which enables a. free manipulation of all of the parts, as occasion may require.

A further object is to provide improved means for! stopping the reciprocating motion of the pattern and the work to allow the insertion of new work after an operation is completed.

A further object is tol provideimproved means for spring pressing the pattern and the work against the pattern disk and cutter respectively.

A further object is to provide improved driving mechanism which permits the speed of the several movements to be adjusted at will so as to give thedesired results.

lith these and other objects in view the invention consists in certain novel features of construction, and 'combinations and arrangements of parts, as will be more fully hereinafter described and pointed out in the claims. n

In the accompanying drawings Figure 1 is a top plan view illustrating my improved machine;

Fig. 2 is a view in side elevation;

Fig. 3 is an enlarged fragmentary plan view showing the mechanism for throwing the reciprocating driving means out of operation; I.

Fig. 4 is a view in section on the line 4 4 of Fig. 3;

Fig. 5 is a view in section on the line of Fig. 6;

Fig. is a view partly in elevation and partly in sec-tion illustrating the work and pattern supports; and

Fig. 7 is a view in section tl rough the cutter.

1 represents a supporting table having two heads 2 and 3 thereon. The head 2 is secured to a base 4 which has a slot 5 there-l 1n and a set screw G located in the slot and securing the base and head at any desired lateral adjustment. The head 3 is supported on a base 7 which is adjustable laterally and longitudinally by means of set screws 8 and 9 respectively, and clamping arms 10 secure the base 7 at the desired position of adjustment.

'lhe head 2 supports a rotary shaft 11, while the head 3 supports and normally clamps a rotary shaft 12. On the shaft 1'1 a rot-ary cutter 13 is secured and pattern follower 14 is secured on the shaft 12, said shafts being rin alinement and the cutter and follower being of the same diameter. A drive pulley 15 is provided on the shaft 11 and receives motion in any approved manner to turn the cutter. A pulley 16 is provided on the shaft 12 to turn the shaft when the latter is released from clamping action and the cutter and the pattern follower are reversed, which is desirable in the making of a new pattern.

A protecting hood 17 partially .incloses the cutter 18 and a base 18 of said hood is secured to the table 1 by set screws 19, and

said hood has a tubular extension 2O to which an air hose, not shown, may be connected to draw off the shavings.

A pivoted frame 21 is supported on a shaft 22 and the latter is mounted 'in bearings 70 on a reciprocating plate 71, said plate guided in its movement by strips 72 secured to the table 1.

The pivoted frame 21 is made with three alined bearings 23, 24 and 25. Rotary chucks 26 and 27 are supported in the bearings 24 and 25 respectively and support a pattern 28 between them. A chuck 29 is supported at the other end of bearing`24 and the work'30 is held between the chuck 29 and avcenter 31, the latter-mounted to move longitudinally' in a sleeve 32, -said sleeve'secured in the bearing 23 by means of a set screw 33.

Abracketrarm 34 is secured on the sleeve 32 and an Leshaped lever 35V is pivotally connected at its lowerend, as shown at 36, to

the lower end of the arm 34. A link 37 connects the intermediate portion of the leztlie lever and on the center 31 to engage the work and hold the latter in proper position. Vhen it is desired to release the work7 it is simply. necessary to swing the upper end of the lever 35 outwardly withdrawing the center 3l, as willbe readily understood.

A fixed arm 40 is secured to the guide plate 71:and has a slot 41 at its upper end. Asleeve 42 is pivotally mounted in the slot 41 `by means of screws or pins 43 and supports a plunger rod 44, the inner end of said plunger rod normally engaging in a notch 45in the bearing 24. A shoulder 46 is provided on the rod 44 and a coiled spring 47 is located around the rod between the shoulder 46 and the sleeve 42 exerting an inward pressure on the rod so as to exert a continuous inward pressure on the frame 21 to hold the pattern and work against the pattern follower and cutter respectively. A finger hold 48 is provided on the outer end ofthe rod 44.; f Y,

When `it' is desired to release Ythe frame from its operative position, it is simply nec- .essary to withdraw the rod 44 from the notch 45 and swing the rod at an angle, the pins' or screws 43 operating as pivots. The frame 21 can then be swung out of the way ofthepattern follower and cutter, as will be understood.

A. drive shaft 49 is supported in bearing brackets 50 at one side'of the table 1 and is provided at its ends with friction disks 52, and 53 respectively. A bracket 54 is secured to one end of the table 1 and is provided with bearings 55 and 56 affording mounting for a'shaft 57. A rod 58 is secured to the brackets 55 and 56 and located parallel to the shaft57.

A bifurcated bracket 59 is mounted to slide onthe rod 58 and secured in position of adjustment by means of a set screw 60. A friction wheel 61 is vkeyed'to the 'shaft 57 and located in the bracket 59 and engaging the face of disk 53 so that by reason lof the adjustment of the bracket 59,the wheel 61 can be moved toward or away from the center of the disk 53 to vary the speed of transmission.,l

` the parts as may be desired;

A worm 62 onone end of shaft 57 meshes with a worm wheel 63 which is keyed on the shaft 22 so that the latter is free'to reciprocate through the wheel 63' and the parts are held in proper relative positions by means of bearing brackets 64 which extend laterally from the bearing bracket 56.

A-pinion 65 is secured on the shaft and Vmeshes with an idle pinion 66 located on a stud 67 carried by frame 21 and meshes with a gear wheel 68 oneJ short shaft 69 carrying the chuck 27. It is, of course, to

"be understood that the several chucks supporting the'pattern and the work are in 'alinement and are connected so that when the shaft 69 is driven, the pattern and the "work are likewise revolved.

A bracket 73 is secured to the opposite end of table 1. and has a bearing'74 for a vertical shaft 75. A crank disk 76 is secured on the upper end of shaft and a link 77 connects the crank disk with the reciprocating plate 71 so that as the disk revolves a reciprocating motion is imparted to the plate. A hand wheel 7S is provided on the lower end of the shaft 75 so as to permit a manual manipulation to position 'The crank pin762L on disk 76 is adjustable `in a T-slot 7 6b and the link 77 comprises two members 77 a. and 77 b connected by screws 77". The screws are positioned in slots 7 7 d in the linkmember 77a and screwed into member 77" so that the length of the link can be adjusted.

This adjustment of the movement impart ed to the plate 71 is to give the .desired movement according to the work desired.

` A worm wheel 79`is secured on the shaft 75 and is drivenby a worm 80 secured on a shaftf317 the .lattermounted in bearings 94V on a pivot plate 33; This pivotplate is guided in its pivotal movement'by means of guide strips 93 at the endsfthereof and is adapted, when moved7 to move the wormi A friction wheel 85 Vis securedV nected by a link 91 to the pivot plate 83 and a stop pin 92 on said' plate limits the movevment of the link 91 in one direction and in this position of the link, the worm 30 is in mesh with the worm wheel 79. l/Vhen the lever 89 is swung to the right of Fig'. 3, 'the g plate 83 will be moved on its pivot 84 to move the worm 30 away from the worm wheel '79 so that the reciprocating motion of the plate 71 is stopped and the` plateand parts carried therebV can be manually moved at will until tie worm 8O is again moved in mesh with the worm wheel.

The operation is as follows: The pulley 15 is driven to continuously revolve the cutter 13. The drive shaft 49 transmits motion from disk 58, wheel 61, shaft 57, worm 62, worm wheel 63, shaft 22, and pinions 65, 66 and 68 to revolve the pattern 28 and the work 30, as above explained. The drive shaft 49, through the medium of disk 52, wheel 85, shaft 81, worm 80, worm wheel 79, shaft 7 5, crank disk 7 6, and link 77, imparts a continuous reciprocating motion to the plate 71. The spring pressed rod 44 exerts a continuous lateral pressure against the frame 21 to hold the pattern and the work against the pattern follower and the cutter respectively. It will thus be noted that while the pattern follower is stationary and the cutter has rotary motion, it is held against movement in any other direction while the pattern and the work are continuously revolved, are held in Contact with the pattern follower and the cutter respectively, and are given a continuous longitudinal reciprocating motion so that the cutter quickly cuts the work in exact conformity with the pattern.

When it is desired to cut a new pattern, the cutter 13 and the pattern follower 14 have their positions reversed. The finished device or the pattern, as the case may be, is then located between the chuck 29 and the chuck rod 31 and the work is located between the chucks 26 and 27 so that the new pattern will be cut exactly like the old pattern or the article.

Various slight changes may be made in the general form and arrangement of parts described without departing from the invention, and hence I do not limit myself to the precise details set forth but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

1 claim:

1. The combination in a lathe with a pattern follower and a cutter, of a reciprocable work and pattern support, means on the support holding the pattern against the follower and the work against the cutter, a rotatable shaft, a crank disk, a crank pin adjustable on the crank disk, and a link con necting the crank pin and the support for reciprocating the support upon the rotation of the disk.

2. The combination in a lathe with a pattern follower and a cutter, of a reciprocable work and pattern support, means on the support holding the pattern against the follower and the work against the cutter, a rotatable shaft, a crank disk having a groove extending across the center thereof, a crank pin adjustably secured n said groove, and a link connecting said crank pin with the support for reciprocating the support upon rotation of the disk.

3. The combination in a lathe with a pattern follower and a cutter, of a reciprocable work and pattern support, means on the support holding the pattern against the follower and the work against the cutter, a rotatable shaft, a crank disk, a crank pin adjustable on the crank disk, and a link connecting the crank pin and the support for reciprocating.

the support upon the rotation of the disk, a worm wheel fixed to turn with the crank disk, a driving worm meshing with the worm wheel, and means for moving the worm away from the worm wheel.

4. rlhe combination in a lathe with a pattern follower and a cutter, of a reciprocable work and pattern support, means on the support holding the pattern against the follower and the work against the cutter, a rotatable shaft, a crank disk having a groove extending across the center thereof, a crank pin adjustably secured in said groove, a link connecting said crank pin with the support for reciprocating the support upon rotation of the disk, a worm wheel fixed to turn with the crank disk, a driving worm meshing with the work wheel, and means for moving the worm away from the worm wheel.

5. The combination in a lathe with a pattern follower and a cutter, of a reciprocable work and pattern support, means on the support holding the pattern against the follower and the work against the cutter, a rotatable shaft, a crank disk, a crank pin adjustable on the crank disk, and a link connecting the crank pin and the support for reciprocating the support upon the rotation of the disk, a worm wheel fixed to turn with the crank disk, a driving worm meshing with the worm wheel, and means for moving the worm away from the worm wheel, a drive shaft, and adjustable friction driving means operatively connecting the worm with the drive shaft.

6. The combination in a lathe with a pattern follower and a. cutter, of a reciprocable work and pattern support, means on the support holding the pattern against the follower and the work against the cutter, a rotatable shaft, a crank disk having a groove extending across the center thereof, a crank pin adjustably secured in said groove, a link connecting said crank pin with the support for reciprocating the support upon rotation of the disk, a worm wheel fixed to turn with the crank disk, a driving worm meshing with the worm wheel, means for moving the worm away from the worm wheel, a drive shaft, and adjustable friction driving means operatively connecting the worm with the drive shaft.

. the follower and the work against the cutter', a `rotatable shaft, a crank disk on the shaft, a link connecting the crank disk and the support for reciprocating the support 'i uponrotation of the disk, a worm wheel o'n said shaft, a pivotal support, a second shaft mounted on said pivotal support, a worm v on the second shaft meshing with the worm wheel,' and means for moving the pivotal support' tov move the worm out of mesh with the worm Wheel.

8. The `combination' in a lathe with a pattern follower and a rotary cutter, of a reoiprocable work and pattern plate, means on the plate supporting the pattern against the follower and the work against the cutter, a rotatable shaft, a crank disk on the shaft, a link connecting the crank disk and the support for reciprocating the support upon rotation of the disk, a worm wheel on said shaft, a pivotal support, a second shaft mounted on said pivotal support, a worm on the second shaft meshing with the worm wheel, -a lever, a link connecting the lever with the pivotal support whereby the movement of the lever in one direction causes thev movement of the pivotal, support to move theworm out of mesh with the worm wheel, and a stop pin on the pivotal support limiting the movement of the link in one direction when the worm is in mesh with the worm wheel. y

9. The combination in a lathe with a pattern follower and a rotary cutter, of a reciprocable work and pattern support, means on said support for holding the pattern against the pattern follower and the work against the cutter, a rotatable drive shaft, a crank disk. a link connecting the crank disk and support for reciprocating the support upon the rotation of the disk, and adjustable friction driving means between the drive shaft, the crank disk and the pattern and work support whereby reciprocating motion is imparted to the pattern' and work.

FREDERICK NUESKE. 

